Doffer.



B. A. PETERSON.

DOFFER.

APPLICATION FILED JAN.6,1912.

Patented-Dee. 15,1914.

4 SHEETS-SHEET 1.

B. A. PETERSON.

DOFFER.

' APPLICATION FILED JAN. 6, 1912.

Patented Dec. 15, 1914.l

4 SHEETS4SHEET 2.

x "wi nesses;

Ef A. PETERSON.

, DOPFBR. AEPLIGATION FILED mme, 1912.

Patented 1360115-, 1914.

4 SHEETS-SHEET 3.

54 47 7 J3 15 74 jg *L* .16 7,- J0 Ja l l LL r6l i 66 1.. 53

B. A. PETERSON.

DOPPBR. A'PPLGATION FILED JAN. 6, 1912.

1,121,535 Patented Dec. 15, 1914.

Mums-SHEET 4.

n nu n l' nu A y u l l. u

UNITED sTATEs PATENT oEEioE.-I

BURT A. PETERSON, OF ROCKFORD, ILLINOIS, ASSIGNOR T0 HOWARD D. COLMAN,

LUTHER L. MILLER, AND HARRY A. SEVERSON, OFROCKFORD, ILLINOIS, G0- IEARTNERS DOING- BUSINESS AS BARBER-COLMAN COMPANY. I

DOFFER.

T0 all whom it may concern.'

Be it known that I, BURT A. PETERSON, a citizen of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have made certain new and useful Improvements in Doffers, ofwhich the following is a specification.

This invention relates to portable or traveling machines for replacing the filled bobbins upon a spinning frame with empty bob,- bins, such, for example, as the doffer shown inl Patent No. 983,858, issued February 7, 1911, upon an application filed by Howard D. Colman and Burt A. Peterson. The Inachine shown in said patent is particularly adapted for handling warp bobbins while the' embodiment herein shown of the present invention 1s especially intended to operate upon filling bobbins One of the objects of the present invention is to improve the construction of the magazine containing the empty bobbins.

Another object of the inventionis to improve the means for feeding the bobbins from the magazine.

lA further object is to provide improved means for controlling the passage of the empty bobbins from the feeding means to the device which next receives the empty bobbins.

In the accompanying drawings, Figure 1 isa vertical sectional view through'the upper portion of a doffer embodying the features of my invention, the view being taken in the plane of dotted line 1 1 of Fig. 3.k

Fig. 2. is a top plan View, on a smaller scale,

of some of the parts shown in Fig. 1. Fig. 3 is a top plan view, with the bobbin magazine and certain other partsomitted. Fig. 4 is a vertical sectional view taken in* the plane of dotted line 4 4 ofAFig. 3, but on an enlarged scale. Fig. 5 is a vertical section on dotted line 5 5 of Fig. 3. Fig. 6 is a fragmental elevation ofthe butt-conveying chain. Fig. 7 is a fragmental sectional view of a guide for the tip-conveyingfchain.-

Fig. 8 represents a guide for. the butt-conveying chain. Fig. 9 illustrates a yielding connection between the conveyer and its driving mechanism.I Fig. 10 is a fragmental side elevation of the bobbin magazine. Fig. 11 is a sectional View of a removable bottom for the magazine.' Fig. 12 is a fragmental Spcification of Letters' Patent. Patented Dec. 15 1914.

Application-filed January 6, 1912. Serial No. 669,762.

framework, said upper portion in this instance consisting of two vertical members 1 and 2, and a horizontal bracket 3 rigidlysecured to said members. l

As heretofore stated, the machine represented in the drawings is particularly intended to handle fillingbobbins, such, for example, as those shown in F ig. 13. Each o f said bobbins comprises the cylindrical relatively-slendertip or body a and a butt comprising the upwardly-tapering portion b, a cylindrical portion provided with metallic rings or beads c, and the downwardly-tapering portion d. y

The vmagazine containing the empty bobbins may be of any suitable form, as, for

`instance,.thatl shown in-Figs. 10 and 13.

Said magazine comprises an upper and a lower rectangular frame 4 and 5, each preferably formed of an integral length of channel bar, the ends ofthe bar being preferably welded together so as lto form a seamless frame. In order to adapt the, magazine to contain a number of vertical tiers of bobbins I provide at opposite sides of the magazine a series of vertical partitions 6 and 7 extending from end to end of the magazine, each series of partitions consisting of folds formed in an integral piece of sheet-metal, the upper and lowerv edges of the sheet being suitably secured to the frames 4 and 5. In the Apresent embodiment of the invention, the bobbins are intended to be arranged with the tips thereof extending in the same general direction. tions 6 and 7 areaccordingly spaced apart at distances corresponding with the diameter of the tip and the butt, respectively, of a bobbin. In use the magazine stands `in a vertical positionas indicated in Fig. 5. By reason lof the difference in the diameters ofthe tip and the butt of a bobbin the bobbins in a tier lie atvarious angles to the horizontal, the departure from the horizontal tending to 'increase as the tier increases in height. Such departure from a horizontal position tends to cause the bobbins to slide The partilient departure of thel butts from the vertical.

In order to maintain the butts in a vertical line, I provide means to limit endwise movement of the bobbins in the magazine, which means may consist, as herein shown` of a bead .8 formed upon and eXtending longitudinally of each of the partitions 7, these beads being of greater thickness than the partition so as to overhang thel butt-receiving spaces and restrict the open sides thereof suiiiciently to prevent a butt from passing through such open sides. The i beads 8 are also of advantage in connection with the loading of the magazine, the magazine being then ina horizontal o'r inclined position, and theubeads 8 serving to prevent the bobbin tips from dragging o'n the walls 9. When the bobbins are being inserted into the magazine, the butts of the bobbins slide along the beads 8, the tips of the bobbins hangingout of contact with the walls 9.

' The partitions 6 are made of such height tween opposite sides of the lower frame 5,

said bottom having at each end an angular fiange 11 which stops a ainst the underside' of the end lframe ,5, an thus limits-the-upf ward movement of the bottom. At the sides if of the bottom are inclined anges 12 arranged to fit between the inner ends of the artitions 6 and the beads 8, said flanges ing inclined so as to assist in guiding the bottom into place.- 1n the present embodi- `ment, the bottom is removably secured in A place by'ineans of a latch 13 pivoted at 14 upon the lower side of the bottom, the.

ends of saidv latch being adapted to enter slots 15 in the end flanges of the bottom, and slots 16 in the lower frame 5. The end portions of the lower wall of each slot 16 are inclined upwardly toward the middle of the siot', as shown in Fig. 12, iii order to exert a wedgin draw the ottoni firmly into position.

17 are projections upon the lower side of the latch to permit of conveniently engag- Aing thev latch to turn it into and out of operative position. The pivotal movement of v the latch is limited by lugs 18 on the bottom.

- 19 reslightprojections upon the under side of the bottom arranged one at each sideof the operative position `of the latch, to pre-` vent. accidental displacement of the latch when locked.

lfor the magazine, said seat comprising) two eing` effect upon the latch and thus4 In order that the magazine. may beloonveniently reversed in case the lower end" thereof becomes damaged, the slots 16 are duplicated inthe opposite ends of thejmagazine so that either end of the magazine may be the lower end' thereof.

The doifer framework comprises a seat parallel bars 20 and 21, the magazine held against displacement by means of two stop` fianges 22 and 23, two rigid hooks 24 and 25 and a hook26 fixed upon a shaft'27 .mounted in suitable bearings in theV frame-v work, the hook 26 being normally held in operati-ve position byv a torsion springl28.

for releasing the hook26. p 30 are curved guides to assist in positioning the-magazine on its seat.

Any suitable means may be employed toremove and replace the bottom 10 while the magazine is in position upon itsseat, the means herein shown comprising a su port 31 fixed to a spindle 32 which 'is slida le ina bearing 33 formed in the bracketl 3. ySaid support is arranged to be raised into Contact with thelower' side of the bottom 10 by means of a hand lever 34 pivoted' at 35.

Themeans for operating the latch 13 consists of alever 36 'pivoted at 37 on the support 31, said lever having thereon two lugs 3S adapted to lie' at opposite sides of either ofthe two projections 17 on the latch 13.

39 is a stop to limit movement of the lever .36- in the direction to lock the bottom in place.

asv

Assuming the lever 36 `to be in the position representedin Fig. 3, if the lever 34 is operated to raise the support 31 into contact with the bottom 10, the lugs 38 will pass at either side of the adjacent projection 17. The support 31 being held up, the lever 36 is swung to one side, thereby turning the latch 13 so as to withdraw its ends from the slots 16. Thesupport 31 may now be lowered, with the bottom .l0 lyin thereon. The

flanges 12 fitting over the si es of the support 31 prevent lateral displacement of the ,bottom, while endwise displacement is revented by the angular flanges on the en s of the bottom fitting over the ends of the sup.

port'. As the bottom 10 is being thus loweyed, the tiersof bobbins inthe' magazine settle until the lowermost bobbins rest upon a bobbin-feeding means. In the present einbodiment the bobbin-feedingmeans consists of a conveyer comprising two vendless chains carried by sprocket wheels 40, 41,42 and 43. The wheels and 41v are fixed upon a 'shaft 44 mounted! in suitable bearings in the framework. Each ofthe wheels 42 and 43 rota tably mounted upon a short shaft 45 (Fi s. 1

and 3). l The chain for conveying the bo bin A butts is herein shown as consisting of links 46 (Fig.:4) pivotally connected to pairs of 80 An arm 29 on theshaft 27 provides means 'sheet-metal stampings 47, said stampings to receive the butts .of the bobbins. Uponl theouter side of each sheet-metal stamping is a flange 50 whereby the chain is provided upon each side with a series of-sueh flanges. The upper run .of thechain is held against lateral and vertical displacementby means of the ianges 50 passing through a guide 51 'i (Fig. 8) secured in the framework. At the outer side of the chain is a ledge 52 (Fig. 5) xed inthe framework, upon which ledge the bobbin butts slide as they are being.

moved by the chain. The chain for moving the bobbin tips may have lugs formed 'of i sheet-metal stampings, as in the case of the butt chain. Herein I havey shownl the tip chain ascomprising links 53 and lugs 54 (Fig. 4), the latter providing between them recesses' 55- (Fig. 1) to receive the bobbin tips. Each of said lugs'is provided with a guide rib 56 adapted to move in a guideway' 57 (Fig. 7) provided in the supporting frame, whereby displacement of the upper run of said chain is prevented. )Vhen the bottom 10 is lowered, the conveyer chains are in such position that the tiplreceiving recesses and butt-receiving recesses in said chai-ns are respectively arranged directly below the .tipreceiving spaces and butt-receiving spaces of the magazine, as indicated in Fig. 1. In

the movement of the conveyer the tiers of bobbins are exhausted one after another, beginning at the side where therconveyer enters beneath themagazine, to wit, the lefti hand side' in Fig. 1.

l given bobbin sometimes causes that bobbin It will be seen that the lugs 54 extend close to thevmagazine, and thatv the recesses 55 are just deep eno-ugh to contain the bobbin tips, whereby the loaded conveyer is given an approximately smooth upper surface, and jarring of the tiers of bobbins` as the conveyer moves thereunder is minimized.

The weight of the bobbins resting upon a to tilt so that its tip does not lie against the next lower bobbin. .A If the lowermost bobbin in a tier should be so tilted, a bobbin moved under such tilted bobbin by the conveyer might be free to tilt upwardly. Suchtilting might result if the weight of the superposed bobbins ...were applied at such a point on the bobbin butt that. the bobbin would rock -on the rin c nearest the base of the bobbin. To preven such displacement of a bobbin earried by the conveyer, I provide meansy for shifting the bobbin longitudinally toward the left (Fig. 5), which means comprises a bar 58 fixed in position to underlie the tip.

" spaces of themagazine, said bar having recesses therein, the wall 59 (Fig. 3) ofeach' of which recesses is substantiallyT alined with thewallof a tip .spade in the magazine. 65.

Thewall 60 of .each'recessli's inclined so that lplaced on said spindle afterv the dofl'er has tiers under which the bobbin must pass prior to discharge will then'be exerted at such a point on the'bobbin as to hold the bobbin in its proper position on the conveyer. 'Obviously no cam surfaceO need be rovided for the tier of bobbins last to be fed).

To prevent breakage or excessive shock in case a bobbin should bind between the magazine and the conveyer, I provide suitable means such'asa yielding connection between the conveyer and its driving means. Inv the present embodiment, the conveyer is driven from a vertical shaft 61 which is connected to the conveyer shaft 44 by means to be now described.

, Upon the upper end of the vertical shaftv 61 is fixed a spiral gear wheel 62 (Fig. 3)

meshing with a similar gear wheel 63 which is rigidwith a sleeve 64 (Fig. 4), said sleeve being rotatably mounted upon the shaft 44. Adjacent to one end of the. sleeve 64 -is a collar 65 pinned or otherwise rigidly connected to the' shaft 44. .In the periphery of said collar are four equidistant V-shape notches 66 (Fig. 9). The sleeve 64 has formed thereon a lug 67 upon which are pivoted twoarms 68, each provided with a wedge-shaped tooth 69, said teeth being'located diametrically oppositeeach other with respect to the collar-65j, and being adapted to enter the notches .66. Two springs normally hold the arms 68 together so as to .retain the teeth 69 in the notches 66. The

distance between two adjacent notches 66 is equal to thedistance between the centers of two adjacent bobbin spaces in the magazine. If a bobbin should bind between the niagazine and the conveyer the teeth 69 will be forced out of the notches 66 with which they were engaged, whereby the movement of the conveyer is suspended without interfering with the operation of the remainder of the mechanisms of the doi'er. The momentary resistance experienced by the operatory in turning the driving crank of the dofi'er as the teeth 69 leave the notches 66 indicates to the operator that a bobbin has failed to pass properly into the conveyer. However,`

when the wedge-shaped teeth 69 snap into the next pair of notches 66 ysaid teeth cam the collarl 65 1nv a reverse direction to a yslight extent, and this reverse movement is often suiicient to release the bobbin and permit it to descend properly into the conveyer. W'hen the bobbin-feeding mechanism misses a step as j ust described, one of'the spindles on the spinning frame is left unsupplied with a bobbin, a bobbin being manually mi" prevent damage in case a bobbin should The bobbins occupy a horizontal position in the magazine and a yvertical position upon the spinning frame. The `bobbins are discharged from the magazine in a horizontal position and are conducted in the present embodiment to an erector 71 (Fig. 1) which are secured to bosses (Fig. 4) on the bracket 3. The lower ends of the guides 73 and 74 are connected by a plate or bar 76. Above the guides 73 and 74 is a cover plate 77. At opposite sides of the conveyer are guides or'guard fingers 7879 which prevent endwise displacement of the bobbin. The passageway formed by the guides 73 74 78 79 and the late 77 is made to conform,

enerally, at its outlet end, in cross-sectional dimension to the shape of the bobbin by securing a guide 80 to the under side of said plate. This guide prevents vertical play of the'tip of the bobbin. f

The recesses inthe conveyer which receive the bobbin butts ani tips are suficiently` deep so that the lugs 48 and 54 cam or force the bobbins down the inclined guides l73 and 74. Td' control the bobbins while they are being thus moved through the passageway between the magazine and the erector, l provide suitable means such as two dogs 81 82 (Fig. 2) pivotedat 83 in position to bear upon the opposite end portions of the bobbin, said dogs being pressed downward Aby s rings 84. Downward movement of the ogs is limited by the contact of' the portion 85 of each do' with a stop pin 86. A at 88 and is yieldingly y a coiled spring 89, upward movement of the finger-87 being limited by contact of the rojection 90 on said finger with the bar 7 6. t will be seen that the bobbins are moved under control down the inclined passageway extending tothe erectcr casing, the bobbins being discharged onto the erector 71. After the bobbin has'passed the nger 87, the broad free end o said Enger swings up and closes the passage behind the bobbin, lso that -the' latter cannot become dis placed.

I claim .as my invention:

'1; In a do'er, in combination, a ver# tically-arranged bobbin magazine, an endless conveyer below said magazine and f'ormin a bottom therefor, means for driving said conveyer, and a yielding connection be' tween the conveyer and its driving means to movement o bind between the magazine and the conveyer.

.2. A bobbin magazine comprising two opposite walls suitablysecured together, each V of said Walls being of sheet-metal and each having partition-forming folds therein, the folds upon one wall being spaced apart at distances ycorresponding to the diameter of a bobbin butt and the folds upon the opposite wall being spaced apart at distances corresponding to the diameter of a bobbin tip, the folds' forming butt partitions comprising longitudinally extending beads over-v hanging adjacent butt spaces to limit endwise vmovement of bobbins placed in the magazine. l

3. A bobbin magazine consisting of two metallic end frames, sheet metal sides rigidly secured to said end `frames, each of said end frames having slots therein, a bottom insertible` intoeither end of' the magazine, and locking means on the bottom adapted for coperation with the slots in either end fram 4. In combination, a bobbin -magazine` element, a bottominsertible through either of said elements, and bottom-locking means .carried by said bottom, each end of the magazine being adapted to receive said bottom-locking means.

5. A bobbin magazine having a plurality of spaces therein extending from top to bottom of the magazine to contain tiers of bobbins, the opposite ends of the magazine being similarly constructed, a bottom adapted for insertion into either end of the magazine, and locking means on the bottom adapted to engage either end of themagazine.

6. In a doier, a bobbin magazine, a bob'- bin-feeding means located below said magazine and operating transversely Aof the respective bobbins, and means to shift bobbins endwise as they are being moved by the bobbin-'feeding means.

7. In a dotler, a bobbin'magazine having 8. In a doiler, means for moving a bobbin l transversely of its length, and means co` operating with said movin-g means to cause endwise adjustment oi the position of the bobbin on said moving means. l

9. In a doer, s an endless conveyer for laterally moving bobbins, and a wedgeshape member located at one side of said conveyer in position to -be contacted by. a bobbin bein conveyed, to cause endwise the bobbin. f 10. In a doer, an endless conveyer for laterally moving'b bins, a magazine directly.

ige

.above said conveyer, the bobbins in said magazine 4resting upon the conveyer, and' ltoward the opposite side of the conveyer 11, In a doffer, a magazine adapte contain a plurality of tiers of bobbins and having an open lower end, an endless conveyer beneath said-magazine and formingl the bottom thereof, and a barlocated at one side of the conveyer5 and having recesses which are vertically -alined with 'the respective tiers of bobbins, one wall of each recess being inclined and adapted to be contacted by the tip end of a bobbin to lcause endwise adjustment of the bobbin transversely of the insertible into conveyer and toward the side of the conveyer opposite said bar.

' 12. A-magazinefor empty bins, comprising a rectangular body, partitions in said body for segregating rows of empty bobbins, a relatively narrow closure the end ofthe magazine body adjacent to the butt-partitioning means'in position to underlie the rows of bobbins near the butts of the latter, and means for securing the closure to the body. i

In testimony `whereof I aix my signature 3 6 in presence of two witnesses.

BURT A'. PETERSON.

Witnessesz` I. I I' W. B. HEYM,

LoUIsE A. GUINEE.

2o i f filling bob- 

